Question

Activity 3
classify the following based on heat
transmission method
1- Heat reaches the earth form the sun.
2-The water is heated
3-Hot air escapes through the al y hole.
4-feel the heat when get close to the fire​

Answer 1

Answer:

mark as brainliest

Explanation:

Heat Transfer

Radiation.

Convection.

Conduction.

Answer 2

Answer:

1) Radiation is the transfer of heat energy through space by electromagnetic radiation. Most of the electromagnetic radiation that comes to the earth from the sun is invisible. Only a small portion comes as visible light.

2) When water is heated, it expands, or increases in volume. When water increases in volume, it becomes less dense. As water cools, it contracts and decreases in volume. When water decreases in volume, it becomes more dense.

3) Hot air rises, making much of the heat that we lose in our homes escape through the attic. An estimated 25% of all heat loss occurs through the attic or roof of a home. Cracks or holes in an attic, along with improperly placed vents, allow for significant amounts of heat loss through the attic space.

4) You feel hot because, when you stand near a fire the temperature around you is greater than your body temperature leading to an exchange of heat, your body then gain heat from the fire i.e an endothermic reaction occurs and the heat absorbs leads to an increase in your body temperature making you to feel hot.